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White ATX power supply unit with 120 mm fan and flat white cables

segotep

segotep GM850 White 850W ATX 3.1 PCIe 5.1 80 Plus Gold Full Modular power supply

SKU CH-4NKH-M8TKS MPN GM850

White 850 W ATX 3.1 power supply with PCIe 5.1 12+4PIN connector, dual 6+2PIN ports, full modular flat cables, 80 Plus Gold efficiency and a 120 mm silent fan

  • Max wattage850 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 120 mm
  • Power factor correctionActive
  • PCIe power connectors12+4PIN, 2 × 6+2PIN

Model ATX 80+ Gold (850W) White

  • ATX 3.1 and PCIe 5.1 ready for 200% total and 300% GPU power excursions
  • 80 Plus Gold certified efficiency above 90% reduces energy consumption
  • Full modular design with flat white cables improves airflow and cable management
  • Native 12VHPWR cable delivers up to 600W to PCIe 5.1 graphics cards
  • DC-DC structure with LLC resonance and 12V synchronous rectification ensures stable output

White ATX 3.1 power supply for modern builds

The segotep GM850 White delivers 850 W of continuous power through an ATX 3.1 compliant design. It targets system builders who need a clean white aesthetic and native support for current-generation graphics cards. Full modular cabling keeps the interior tidy and airflow unrestricted.

Native 12VHPWR cable and dual 6+2 PIN connectors

A single 12+4 PIN cable supplies up to 600 W directly to PCIe 5.1 graphics cards without adapters. Two additional 6+2 PIN ports cover older or secondary GPUs. Flat white cables simplify routing and improve case airflow compared to traditional sleeved looms.

80 Plus Gold efficiency at 850 W

The unit maintains greater than 90 percent typical efficiency across the load range, reducing waste heat and electricity cost. Active PFC and a 100 to 240 V input range ensure stable operation worldwide. DC-DC topology with LLC resonance provides tight +12 V regulation under heavy transient loads.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $89.99
Cheaper than about 72% of the 10,869 comparable items (median $142.99).
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand nameSegotep
Model nameGM850 White
Product colorWhite
Product typeATX 12 V / EPS 12 V
Performance
Frequency47–63 Hz
Ports & slots
PCIe power connectors12+4PIN, 2 × 6+2PIN
Connection types1 × 24 pin (20+4) ATX
Power
Max wattage850 W
Power efficiency> 90%
Modular cablingFull Modular
Power factor correctionActive
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Overload protectionYes
Supply voltage100–240 V
AC input frequency47–63 Hz
Rated power850 W
+3.3V max. current16A
+5V max. current15A
+12V1 max. current70A
-12V max. current0.3A
+5VSB max. current2.5A
Main power connector20+4 Pin
Under voltage protectionYes
Over current protectionYes
Over power protectionYes
Compatibility
PSU length limit150 mm
In the box
Fans total quantity1
Environment & compliance
Over temperature protectionYes
More details
Fan configuration1 × 120 mm
Over load protectionYes
Short circuit protectionYes

Other versions of this model

1 more in the same range

Questions about this item

Will the 120 mm fan need replacement after long-term use?

The 120 mm fan is the only moving part; under normal conditions it runs for many years, and a full-modular design lets you swap the unit without rewiring the case.

What protection activates first if the 850 W load is sustained?

Overload Protection triggers when total draw exceeds 850 W, while Over Voltage Protection guards the 12 V rail against spikes.

How loud and hot does the unit get when it runs all day at high load?

The 80 Plus Gold rating keeps waste heat low, and the Silent Fan mode keeps the 120 mm fan at low RPM until internal temperature rises.

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